Add browser auth for headless runs

Headless/IntuneManagement.Headless.psm1

@@ -37,13 +37,19 @@ function New-TemporaryBatchFile
 function Test-AuthParameters
 {
     param(
+        [string]$AuthMode,
         [string]$Secret,
         [string]$Certificate
     )
 
+    if($AuthMode -eq "Browser")
+    {
+        return
+    }
+
     if((-not $Secret) -and (-not $Certificate))
     {
-        throw "Specify -Secret or -Certificate."
+        throw "Specify -Secret or -Certificate for AppOnly auth, or use -AuthMode Browser."
     }
 }
 
@@ -60,6 +66,11 @@ function Invoke-IntuneHeadlessBatch
 
         [string]$Certificate,
 
+        [ValidateSet("AppOnly","Browser")]
+        [string]$AuthMode = "AppOnly",
+
+        [string]$RedirectUri,
+
         [Parameter(Mandatory = $true)]
         [psobject]$BatchConfig,
 
@@ -68,7 +79,7 @@ function Invoke-IntuneHeadlessBatch
         [string]$BatchFile
     )
 
-    Test-AuthParameters -Secret $Secret -Certificate $Certificate
+    Test-AuthParameters -AuthMode $AuthMode -Secret $Secret -Certificate $Certificate
 
     $projectRoot = Get-IntuneManagementProjectRoot
     $runtimeModule = Join-Path $projectRoot "Runtime/IntuneManagement.Runtime.psd1"
@@ -98,13 +109,19 @@ function Invoke-IntuneHeadlessBatch
             TenantId = $TenantId
             AppId = $AppId
             SilentBatchFile = $BatchFile
+            AuthMode = $AuthMode
         }
 
-        if($Secret)
+        if($RedirectUri)
+        {
+            $invokeParams.RedirectUri = $RedirectUri
+        }
+
+        if($AuthMode -eq "AppOnly" -and $Secret)
         {
             $invokeParams.Secret = $Secret
         }
-        else
+        elseif($AuthMode -eq "AppOnly")
         {
             $invokeParams.Certificate = $Certificate
         }
@@ -135,6 +152,11 @@ function Export-IntunePolicies
 
         [string]$Certificate,
 
+        [ValidateSet("AppOnly","Browser")]
+        [string]$AuthMode = "AppOnly",
+
+        [string]$RedirectUri,
+
         [Parameter(Mandatory = $true)]
         [string]$ExportPath,
 
@@ -167,6 +189,8 @@ function Export-IntunePolicies
         -AppId $AppId `
         -Secret $Secret `
         -Certificate $Certificate `
+        -AuthMode $AuthMode `
+        -RedirectUri $RedirectUri `
         -BatchConfig $batchConfig `
         -SettingsFile $SettingsFile `
         -BatchFile $BatchFile
@@ -186,6 +210,11 @@ function Import-IntunePolicies
 
         [string]$Certificate,
 
+        [ValidateSet("AppOnly","Browser")]
+        [string]$AuthMode = "AppOnly",
+
+        [string]$RedirectUri,
+
         [Parameter(Mandatory = $true)]
         [string]$ImportPath,
 
@@ -225,6 +254,8 @@ function Import-IntunePolicies
         -AppId $AppId `
         -Secret $Secret `
         -Certificate $Certificate `
+        -AuthMode $AuthMode `
+        -RedirectUri $RedirectUri `
         -BatchConfig $batchConfig `
         -SettingsFile $SettingsFile `
         -BatchFile $BatchFile
@@ -248,6 +279,11 @@ function Invoke-IntunePolicyAction
 
         [string]$Certificate,
 
+        [ValidateSet("AppOnly","Browser")]
+        [string]$AuthMode = "AppOnly",
+
+        [string]$RedirectUri,
+
         [string]$SettingsFile,
 
         [string]$BatchFile,
@@ -282,6 +318,8 @@ function Invoke-IntunePolicyAction
                 -AppId $AppId `
                 -Secret $Secret `
                 -Certificate $Certificate `
+                -AuthMode $AuthMode `
+                -RedirectUri $RedirectUri `
                 -ExportPath $ExportPath `
                 -SettingsFile $SettingsFile `
                 -BatchFile $BatchFile `
@@ -298,6 +336,8 @@ function Invoke-IntunePolicyAction
                 -AppId $AppId `
                 -Secret $Secret `
                 -Certificate $Certificate `
+                -AuthMode $AuthMode `
+                -RedirectUri $RedirectUri `
                 -ImportPath $ImportPath `
                 -SettingsFile $SettingsFile `
                 -BatchFile $BatchFile `